Using su or sudo is ok--if you don't forget to log off/out/exit.
Just how many out there have to use a terminal as root to do updates/installs of this or that and have a normal GUI running and doing some surfin at the same time?
A bigger practice (more then likely with a single user computer) that's rather debatable also.
As stated--the ROOT account is to keep fumbly fingers--cats walking across the keyboard--or just plain dummass bad luck with typing/file handling from stuffing the computer.
It's always been--Use at your own risk! type warnings.
I kinda thought I (almost) was warning not to use root as normal login--kinda---but then again--who listens to me?
If anyone thinks they can do what's needed--and won't screw up at all--I would suggest actually doing it for a month or so--it's a GREAT teacher, learning method....really quick and steep learning curve usually overcome by a bit of talent and work. Doo-doo can occurr--and will from time to time.
Murphy will eventually prevail over the best intentions or even the brightest guru.
But there's a bunch of just plain old "myth" reasons floating about of why to not use root all the time.
Just one or two basic simple reasons is enough to just use root as needed.